Are you running ver 1.5? If so I did a quick guide with the link to the program you need to install on 1.5 (And hide the corrupt file that goes with it.
I will get you a link, try what it says there and you should be ready to go.
Quick Install Guide Right at the top of the Page
Since you have already installed just copy the roms out of the SNES folder you already made and then DELETE your installation thats not working then Follow the directions I listed. You should be playing in about 4 minutes ^-^